Isis vs Ra

Hello. I'm not really asking about how this matchup goes but rather, which one is better. I go back and forth between them a lot but I'd like to here from players that are more competitive than me what their biggest differences, their strengths and weaknesses, whether some matchups or maps are better/worse, etc. For a long time I had heard that Isis was the best god in the game but I've been hearing a lot of Ra hype recently too.