Provided you accept the facts: this is a movie about a runaway train, and there's only one way Hollywood can make a movie about a runaway train (i.e. the hero(es) stop it from running away) - this is decently-made, and at times exciting.
It breaks no new ground (alright, I've never seen a train cornering so fast its inside wheels are off the ground), so I'm not sure "exciting" is the right word, but at least the photography is excitingly sharp and direct.
Denzel trots out his usual character, and no-one else really matters (even his co-heroes).
Quite why it made sense for a couple of helicopters to duck and dive either side of the front of the train as it careened towards disaster is anybody's guess. At least it provided bases for the film's camera crews.
All in all, as good as could be expected, I guess.