The opposite. Donphan beats most of the S and A rank mons face to face making him a solid check or even counter to most of them. The problem is without recovery he gets worn down fast and if you want him to spin over the course of the game you cant use him to check all the things he could if he had recovery. One shouldnt forget that his physical bulk and attack power is basicly the same as Hippos and with AV its like having physical and special defensive Hippo in one pokemon but, and here we are again, without any recovery which fucks it up pretty hard. Its a pitty realy :(
Ok
Aegislash-If you are using AV, you are using an ass item on an already ass pokemon(remember, runs min speed and is bulky af)
Thundurus-Sometimes runs grass knot
Landorus-Do I even need to eplain
Deo-S-Fucks it up with psycho boost or ice beam
deo-d- got me here
zard x- loses to will o wisp
zard y- just flat out dies
azumarill- physical attacks CAN overwhelm donphan
garchomp- got me here
Mega Gyarados- Mold Breaker, water move, and complete set up bait. This is where you wish you had exca.
Keldeo- Special water attacks
Mawile- WAYYYYY to strong to take 1v1
Talonflame- got me here
Mega TTar- got me here
mega venusaur- dies to giga dran
clefable- sets up all over donphan
dnite- got me here
excadrill- got me here
ferrothorn- stalls you out
gengar- can will-o-wisp
heatran- got me here
hippowdon- just stalls the fuck out of you
kyub- teravolt ice beam gg
landorus-t- ice shard aint doin shit
latios- one of the strongest special attackers in the game? I don't think so
rotom-w- burns, hydro pump
terrakion- got me here
tyranitar- not reliable. some variants run ice beam
That's S to A. And how many does it reliably counter/check? 8/33.