Kira's shit:
AP is either, 0.74-0.97 or 1.1 (1.1 is only if you crosscale to Part 8 so ignore that I guess). Either way all his potential scaling ends hover around mid 8-C, no + though. So he's weaker than Godzilla, but not by a lot, his low end would give Godzilla a 30% advantage though, which his higher ends would be negligible difference.
SHA can go up to > 7.8 tons with fire like temps, though varies depending on the heat (lower or higher depending on the temp), Godzilla being Godzilla might roid SHA the **** out thou.
LS is Unknown atm but if you don't mind using shit down the line, he's at least 15 tons with one hand, though at most Class K. Class 25 is the safest bet, obviously, Godzilla outclasses him exponentially in this aspect.
KQ's range is short (a few meters tops, about 2m) but SHA's range is infinite (Profile is outdated in this aspect so ignore this if you want but it's stated that SHA has "effectively infinite range" in a guide, but even then, Centipede shoes and the cafe are about 1km apart so the 50m range is wrong anyway, if you want to stick to the profile still despite it being outdated in this aspect, 50m+ should still be enough).
KQ and SHA can't be harmed by Godzilla nor seen, they're invincible here, but Kira himself is kinda frail and would obviously get one shot.
KQ though also dura negs Godzilla. And SHA might blow holes and chunks out of him if we don't use the high end town durability.
So it depends what durability we going with here. If 8-C Godzilla, SHA stomps, if town, Kira has to actually get close enough to use KQ, which might be way to problematic given Godzilla's girth and the fact he can one shot Kira (Not KQ) by moving.