Im not sure if any one else has noticed this but, there are only a small number of people playing the beta that means that the stats for each race and unit are skewed because not all players are of the same skill level. True that wont be the case when the game is released either but in the beta there could be a greater number of unskilled players and therefore an over powered unit or strat could go unnoticed because of poor exicution or impropper match making (like placing a bronze player against a gold.)
From what Ive read and heard the majority of the balance changes were unnessisary or came completely out of nowhere and blizzard has been accused for not listening to the community and only using stats for balance. If this is the case then I would like to inform both blizzard and the community that stats arnt as reliable as people think due to the vast number of variables involved to get those numbers.
I would like to point out that the real balance changes wont happen until after the game has been released. Some of the known issues like the Marauder being over powered and the zealot being useless in the early game or the lack of zerg diversity and its diminishing racial identity will begin to show up in the stats once millions of people are playing the game instead of just thousands.
I would also like to point out that Protoss had been nerfed every patch which is fine because there was some issues with units being to strong. Unfortunatly Blizz hasnt added enough buffs to fill in the weaknesses the nerfs have caused. An example of this would be the immortal timing push. Yes it was powerful but because of that build time nerf the immortal is now less of a counter to the marauder timing push done by terrans. The zerg roach supply nerf had a simmilar effect. Yes the roach is still useful but it has effectivly cut the entire zerg army in half despite the fact that roaches are very easily countered my marauders and immortals. The point im trying to get across is the fact that every buff and nerf has effects outside of the intented situations that warrented the change in the first place. an example of this is the stim pack buff. yes it made marines more useful however it also made marauder pushes stronger which is countering the pathetic concussive shells nerf whic hwas implimented to weaken of stop early marauder pushes.
Just though I'd put out my views on how some of the balance is occurring with out counter balances.

