Raketen cant do its job (destroy tanks) when its get wipe out by a single shot from tanks (sherman, t34, Comet, etc) or are easy and fast get killed by infantery...while other AT gun can stay much longer vs tanks.
plus: raketen aim too long
plus: raketen hit often the ground
plus: i dont need a camo at...i need a good at since volks dont do much vs armor and my armor can easy take out by piat/ptrs/zook bloobs and very good buffed Tank hunters (SU, Firefly,M10, M36) firefly can destroy every heavy tank in under 7sec...
If you are trying to counter tank destroyer spam with heavy tanks, you are the only one to blame. Raketens are better choice, can creep up the range in camo and TDs do nothing to them.
AI Tanks are just as able to kill raketen as any other AT gun, or rather less, becouse other AT guns can't retreat.
If your raketen hits ground too much and you don't need camo at the moment, put it inside garrison, it misses close to never from them, even snipes infantry if you let it shoot. And just like in case of maxim, it gets better firing cone.
If you need really hard non-doc AT for the late game, you have the best non-doc TD in the form of jp4. Give it a try, its amazing I asure you.
And don't give me "jp4 is in last tier" please. For earlier AT that is great for supplementing raketens and shrecks against medium rushes, you still have the newly AT buffed puma. Or simply enough, some mines...