I guess we could take it that VVS in AH translates as Very Very Sparse; and no the MOST under represented country by those in the game now would be Italy.
True, the Italian representation in this game is comparatively small; however, Italy didn't play a particularly large part in the war, either. Beside contributing a unit here and there to help Germany in their efforts, (in which cases, not to discredit Regia Aeronautica pilots, but they generally didn't do near as well as their German counterparts) you could say Italy's largest contribution in the war was opening up a third front (North Africa, and then Italy itself) for Germany to spread their forces out over.
The VVS, on the other hand, was from the outbreak of Operation Barbarossa one of the largest airforces in the world (largely obsolete, yes, but still huge) and it's sheer numbers played a large part in wearing down the Luftwaffe and winning the war for the Allies.
For example...the Yakovlev 1-9 series was the most produced fighter series
ever, with IIRC 35,000 being built, beating out even the 109 series. It served from the beginning of the war until the end of the war, yet we have
two late war examples in game.
