Attacks that need charging look awesome and cool. but...
They are cool in anime, manga, and games too, but, when it's not a turn based game, but you get attacked not just once while Venosaur charges that solar beam, but multiple enemies, or a single boss attacks you approximately 10-to-100 times while that awesome attack charges, you're just a lame sitting duck, and you will end up dead before you could fire you kamehameha or whatever XD
So, that weapon is a lot better now. for actually practical purposes. whether the other way is more epic by looks... debatable, but few likes being a sidding duck mid-battle. that's one of the reason few uses boomerangs too...
isn't it?