I agree with IrishFairy, as the two top troops, they should be faster. Somewhere between a Kopesh Soldier and an RA Warrior. We can debate back and forth that you can do this, that and the other thing to make them faster, but the truth is they should be faster.
I think they're enough powerfull like that. No need to be faster. I managed it correctly when I was still playing, not really a big deal.
This is the same in Ogame at the end: the last ship is very slow. And that's it.