Canon!Ron had a lot of time and personal interaction in which to grow to like Hermione. MoR!Ron is in a different house, and much of his interaction with her is informed by her close friendship with Harry, whom he considers Evil. And according to Ron, being friends with Evil is extremely damning in and of itself.
And it is likely that he likes her, just as in canon.
Canon!Ron had a lot of time and personal interaction in which to grow to like Hermione. MoR!Ron is in a different house, and much of his interaction with her is informed by her close friendship with Harry, whom he considers Evil. And according to Ron, being friends with Evil is extremely damning in and of itself.
Also, Canon!Ron and Canon!Harry both thought Hermione was a twat until the troll incident.