You should tell your son that Rusev is a bad guy. However I see the same comment from all Cena fans or other fans that don't get their favorite guy winning the match.
However I have a feeling that they might take this feud into Mania since Cena could use that you had to cheat to win storyline
Shout out to Rusev, I have liked the guy for a while now but have never been impressed by his matches. However he put on a real solid effort in this match. Good facials, good psychology/storytelling, and nice ring work.