Equal Ore, Equal amounts?

I wonder if having ALL ores give the same results(?) would be a game-breaker or make it easier to keep tabs on them.

One ore give 5/10
Another ore gives 1/10
Another ore gives....ect.

Its difficult to keep track of whether or not you have enough of them(hard to remember)...NOT impossible...just difficult.

Is there some magic reason they have to give different amounts?
Just curious.