My view was pretty much the same for Giggs although I didn't understand at the time how people can change the meaning of the award to suit the player.
The award is supposed to be for achievements that season (or at least to the point when it is voted for). Not a lifetime achievement award (in the same way that you are arguing it shouldn't be an award for playing well against a "crap" Italian side).
So my point remains - it's difficult to see a consistent argument against Bale based on number of games played unless you apply it evenly to Giggs.
My view for what it's worth - I think they both deserve/deserved it as they were voted for by fellow professionals who play against them.