my team in ultra sun consists of dartrix, mudbray, fletchinder, charjabug. I just caught a larvitar but I already have mudbray which is the similar type with larvitar. Should I switch larvitar with mudbray?
The main thing Tyranitar has going against it is that it takes an extremely long time to evolve. Until it does reach that stage, Mudbray/Mudsdale's stats will be better, and you should have an easier time making progress in the game up to the point where Tyranitar could be a realistic possibility (which is almost at the end).