I've read a lot here over the time, now it's time to do my first post.
I have seen a some spreadsheet tests between wolf and devilsaur, but no real world data.
So i figured i could add my 2 cents to the discussion. The calculations will be made on my gear which is a bit low, all pre naxx, hitcapped, AP 3.6k, crit 25.45%.
First off: The Wolf will definately be better the lower your gear is, straight +320AP vs +9%.
On my gear, infinite time, game data, average.
Devilsaur:
Main Attack: 417,7 dps
Mounstrous Bite: 15,3 dps
Total: 433 dps
Total with MB bonus over time: 471,9 dps
Wolf
Total: 417,7 dps
Total with Furius Howl: 494,8dps
FH bonus uptime: 71.4%
Total with FH bonus over time: 472,8 dps
So the wolf is better allready here with my gear.
Add to this the 320AP increase for me which is 8.9% and the choice is really simple.
You also have to take into account how a fight looks. The MB bonus needs a minimum of 14 seconds to reach 9%, FH is up directly. This naturally means that on short fights the wolf will be better.
I tested this on a heroic training dummy. It's a 1 minute fight with the standard human errors, hit SS to early there, missed AS there... The results are very obvious though.
DPS with Wolf (tinypic)
DPS with Devilsaur (tinypic)
I think i noticed this in 5-man heroics too, the Devilsaur only shines when the fights are long. If the group is good and the tempo is very hectic i tend to do very bad, dps as low as ~1800. If i'm running with a group with bad dps my personal dps is higher ~2200.
I will start to use the wolf from now on, see how it feels.
My only objection is how it looks, the Wolf i plain
ugly. Might have to go for the
Vargul in ZD, looks a bit better.