The reason I'm writing this is because I've noticed some "error" if you're just adding their base stats. For example for "wall", shuckle does have the highest total defensive stats, but because it is unbalanced, shuckle is actaully much less bulkier than lugia, that has 90 total defensive stat points less than shuckle.
So I'm suggesting that multiplying the stats is a better idea, since multiplying more balanced number will bring higher results. For ex, 10x10 > 9x11 > 8x12 ... hope you understand what I mean. I'm not really a mathematician, so there may be much better way to solve this, but adding the stats is really not a good idea.