How is a 7.7% win a landslide? I mean it's a very comfortable win, but its not a landslide.
Florida has been a tough state for Republicans to win Senate elections since the beginning of direct elections of Senators. It's never elected 2 simultaneous Republicans at all. Rubio did better than most others.
One might think that counts for something.
In 2014 Montana's Class II Senate Seat ended an entire century of uninterrupted Democratic officeholders but that doesn't mean Steve Daines' 18 point win against a math teacher with an entirely unfunded campaign was in any way unexpected and it says nothing about Daines himself. You can massage statistics to make any claim you want but just because Robio did a little bit better than other candidates in his situation have, it doesn't mean he gets to suddenly start ignoring the people he represents