Perun
Mushroom
I won't get into the math analysis really (you can't ignore the official WotC stat policy, and expect balanced results), but I'll note that half-elves should also be above the 75 point norm, by your analysis. You forgot to give them additional 5 points for having "any bonus languages" feature, the same as human. In fact they might even get 7 points for it, since they start with two automatic languages (as opposed to a single language a human starts with), and get bonus langauges on top of that.
So, it should be 80 to 82 points for half-elves.
Sillyness aside, I don't think you can actually numerically compare the races without some serious tweaking, and then it's not really objective any more.
So, it should be 80 to 82 points for half-elves.

Sillyness aside, I don't think you can actually numerically compare the races without some serious tweaking, and then it's not really objective any more.