we are not discussing AT here or pen but AI, raving over 200% buff us pointless unless you can judge that stats they are based from, and the base stats are already as poor as old t-34/76 stats.
And that is cherry picking. One can not safely compare a single stat and come to conclusion that it needs a major buff in that stat.
Buffed Cromwell would seem to do same DPS level as PIV if all guns are facing, but with a hull gun having half your DPS the P4 and Sherman are always going to be better here.
Mobility and rotation was actually nerfed a while back on the Cromwell, it was given fast turret rotation as a counterbalance to stop crushing.
And the PzIV with pintle would still be more expensive both in Fuel and MU.
The nerfs to mobility where completely justified (to prevent crushing) and actually irrelevant since the Cromwell remain far more mobile than PzIV.
In addition even if Crom and PzIV had the exact same mgs, Cromwell's mgs would be perform better since they would be firing on weaker targets.
UK AT infantry? Lol you mean Tommy or sapper piats I presume? Because AT Tommies are all but extinct now they and the doctrine have been hit hard with nerfs. Piats are straight up inferior to shreks when it comes to mediums. No argument here their accuracy sucks just as bad and you have no snares to back em up so it's very very easy for P4's to push them around while mg's get to work.
If you are losing your Cromwells with its 45 sight and superior mobility to Shreck PGs you are probably doing something wrong.
I compare Cromwell to t-34/76 because a mg buff is what it needs, current t-34 is not op and nore would a Cromwell be with better MG. 120 fuel would just make it a slightly premium t-34/76 but with exactly same weaknesses. You just wouldn't be able to walk through its mg fire anymore without taking losses.
You are not comparing Cromwell to T-34, you comparing a single stat and especially the one T-34 has that over-performs.
A "slightly premium t-34/76" make little sense as an argument when you talk across factions. It is same argument that was used when Penals, USF mortars and VG's ST44s where introduced with disastrous results.
Also check your stats Cromwell is 110 fuel not 120.
I may remind you again t-34/85 and Sherman still exist, both would still be better tanks than a Cromwell with buffed mg's.
Once more T-34/85 is doctrinal, already uses the exact same mgs, is more expansive and is arguably one of best medium tanks.
Sherman is far less mobile than Cromwell and in faction that does not have stock access to Churchill and Comets.
I am not sure why you keep bringing more things into the debate. The facts are simple, you are suggesting a massive buff to the DPS of the MGs that goes up to nearly x2.5 times more. Solutions like that usually end up creating more problems than they solve.