Agreed. I recently made a new account without leveling any silvers and got into the desert maps, with the exception of valerie. (my unit pool was mostly gold units and vastly inferior to kira's)

There are tons of strategies anyone can use to clear a map and if you have better units, leveling silvers are generally a waste of resources imo especially in nutaku where silver units are so scarce.

Whats more kira has zeno which effectively gives him an UP advantage over the average player.