Question

Is it bad to have a high speed for Groudon, because during primal re. kyogre cancled it out by going later?

Answer 1

No. Its not that reason alone, as its already low speed and better bulk than speed, you'd be better off investing into bulk and physical attack, rather than speed.

Comments

and anyway, you can always run rock polish if you want to sweep

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This. It can mark up for no speed investment once you rid kyogre because you can't possibly have two blue orbs without hacking.