umm, seems like u guys have gone a bit all over the place with this one but no way in hell is a kubel a good counter to mg's lol, in fact its terrible. if its a 1v1, all the maxim has to do is turn, so either the kubel can stay and die or try and change position which doing so it stops firing , while the maxim crew continues to damage it. But i highly doubt anyone goes for a kubel to counter mgs. (maybe x2 kubels can work)
As you have mentioned thedarkamillo, i do agree kubel has great capping power but no way in hell do i consider it to punch above its weight, its combat isn't as good as other mounted guns and has terrible scaling, I have no idea how that is considered punching above its weight. If the kubel is considered to punch above its weight, i wonder what does the make the WC51
Keep in mind the kuble costs only 210mp. It's quick to respond and doesn't bleed. I've done tests myself and itll actually beat all allied mainline infantry in a shoot out without cover (while not realistic scenario it does show that it's got some bite and again it only costs 210mp)
For the maxim turning, all the kuble has to do is withdraw and rengage the flank, it has the vision to decide how/when to engage. What's more, if it's turning to face your kuble its not facing where it was stopping your sturms from walking it off the map.
Its a tool like any.
As for the wc51 I think we can all agree it's over performing, granted at the very least it's got a munitions cost and can't be turned into fuel if lost by its own army.