The reason you don't find as much information about creatures in BW2 is because they're not as important as they were in BW1. I can finish BW2 without a creature easily, but I'd never be able to finish BW1 without my creature. Creatures in BW2 aren't at all as complex as creatures in BW1.
I was very curious which creature would be the best fighter. I spent the last 2 days putting the creatures into a one on one fight club.
All creatures were set to a size of 1, a strength of 1, alignment to 0, and their fatness to 0.3. The land where the fights took place was completely flat, there were no rocks, buildings or trees in the area.
The fights were split into sets. Each set contains 10 fights between the same two creatures. The winner, time, and the final health of the winning creature were recorded. The creature with the most wins gets the set, in the case of a tie the creature which did the most damage wins the set. There were a total of 15 sets. Totaling of 150 fights.
The final scores were calculated by adding up the wins, loses, and ties
A win is worth 2 points
A Tie is worth 1 point
A Loss is worth 0 points
Then the damage taken is subtracted from the damage given. That value is then added to their win, tie, loss score
Example:
The Cow won 1 set lost the other 4, dealt 32.705 damage, and took 42.595 damage. The cow's final score is calculated to be
Score = 2 + (32.705-42.595) = -7.89
Here are the final results:
1. Gorilla with a score of 20.97; 4 wins, 1 loss
2. Ape with a score of 11.04; 4 wins, 1 loss
3. Lion with a score of 9.581; 4 wins, 1 loss
4. Tiger with a score of 1.761; 1 win, 4 loss
5. Wolf with a score of -6.199; 1 win 4 loss
6. Cow with a score of -7.89; 1 win, 4 loss
My conclusion from this data is that the Gorilla is the best creature for one on one creature fights.
I'm not sure about the turtle, are you asking about the BW2 battle of the gods turtle – or the turtle for BW2 which you can download from this site?. Because the turtle you can download from this site acts like the ape, so in this case I'd guess the turtle would be pretty close to ape in fighting skill.
I may continue to do more tests later on, which if I do I will let you know what the results were.
In case you were wondering here are the complete results for each set of creature fights:
Set 1: Lion Vs Ape
Lion: Won 5, Damage Given: 7.999
Ape: Won 5, Damage Given: 7.86
Average Time per Fight: 107.3 Seconds
Winner: Lion
Set 2: Lion Vs Tiger
Lion: Won 6, Damage Given: 7.833
Tiger: Won 4, Damage Given: 7.069
Average Time per Fight: 100.1 Seconds
Winner: Lion
Set 3: Lion Vs Gorilla
Lion: Won 2, Damage Given: 5.262
Gorilla: Won 8, Damage Given: 9.792
Average Time per Fight: 92 Seconds
Winner: Gorilla
Set 4: Lion Vs Wolf
Lion: Won 7, Damage Given: 8.788
Wolf: Won 3, Damage Given: 6.762
Average Time per Fight: 88.7 Seconds
Winner: Lion
Set 5: Lion Vs Cow
Lion: Won 8, Damage Given: 9.207
Cow: Won 2, Damage Given: 6.025
Average Time per Fight: 80.5 Seconds
Winner: Lion
Set 6: Ape Vs Tiger
Ape: Won 5, Damage Given: 7.758
Tiger: Won 5, Damage Given: 7.386
Average Time per Fight: 101.1 Seconds
Winner: Ape
Set 7: Ape Vs Gorilla
Ape: Won 5, Damage Given: 7.818
Gorilla: Won 5, Damage Given: 7.469
Average Time per Fight: 98.1 Seconds
Winner: Ape
Set 8: Ape Vs Wolf
Ape: Won 6, Damage Given: 8.533
Wolf: Won 4, Damage Given: 7.392
Average Time per Fight: 94.4 Seconds
Winner: Ape
Set 9: Ape Vs Cow
Ape: Won 6, Damage Given: 8.346
Cow: Won 4, Damage Given: 7.029
Average Time per Fight: 84.4 Seconds
Winner: Ape
Set 10: Tiger Vs Gorilla
Tiger: Won 3, Damage Given: 7.329
Gorilla: Won 7, Damage Given: 8.965
Average Time per Fight: 114.6 Seconds
Winner: Gorilla
Set 11: Tiger Vs Wolf
Tiger: Won 8, Damage Given: 9.439
Wolf: Won 2, Damage Given: 6.604
Average Time per Fight: 97.5 Seconds
Winner: Tiger
Set 12: Tiger Vs Cow
Tiger: Won 5, Damage Given: 7.722
Cow: Won 5, Damage Given: 8.024
Average Time per Fight: 85.2 Seconds
Winner: Cow
Set 13: Gorilla Vs Wolf
Gorilla: Won 9, Damage Given: 9.568
Wolf: Won 1, Damage Given: 5.8
Average Time per Fight: 91.2 Seconds
Winner: Gorilla
Set 14: Gorilla Vs Cow
Gorilla: Won 8, Damage Given: 9.036
Cow: Won 2, Damage Given: 5.651
Average Time per Fight: 76.9 Seconds
Winner: Gorilla
Set 15: Wolf Vs Cow
Wolf: Won 7, Damage Given: 8.284
Cow: Won 3, Damage Given: 5.976
Average Time per Fight: 68.2 Seconds
Winner: Wolf
Ape
Won: 4
Lost: 1
Tied: 0
Total Damage Dealt: 40.315
Total Damage Taken: 37.275
Lion
Won: 4
Lost: 1
Tied: 0
Total Damage Dealt: 39.089
Total Damage Taken: 37.508
Cow
Won: 1
Lost: 4
Tied: 0
Total Damage Dealt: 32.705
Total Damage Taken: 42.595
Gorilla
Won: 4
Lost: 1
Tied: 0
Total Damage Dealt: 44.83
Total Damage Taken: 31.86
Tiger
Won: 1
Lost: 4
Tied: 0
Total Damage Dealt: 38.945
Total Damage Taken: 39.184
Wolf
Won: 1
Lost: 4
Tied: 0
Total Damage Dealt: 34.105
Total Damage Taken: 42.304