I had never seen the original, so saw them both in a 3 day window last week.
Personally I think people are letting rose colored glasses taint their perspective of the original. The original was one of the most ridiculous things I have ever seen. They drove a fucking monster truck thru a car dealership and lit multiple houses on fire over a "beef" between a small town local mobster and a bar tough guy... and you want to complain about the plot or realistic-ness of the new one?!
You gotta shut your brain off for either film. Within that capacity I think either film is enjoyable on relatively the same level. People are bagging on Conor's fight scenes like Sam Elliot's 1920s style 'put up yer dukes' boxing was something special. Come on bro.