No-explosives Metro for me vs Locker, but if even limited explosives are allowed then locker is more enjoyable just due to the bottleneck by the escalators on Metro.
Still sticking by ziba towers or scrapyard being better than either for straight infantry fights though. (thought again, no explosives improves it imo).
Edit: I also agree with Eliott above, it doesn't feel like CoD, coordinated pushes to break the deadlock on metro is a constant tug of war for those corners and doorways, never had that feeling in CoD.
Ziba towers is probably the closest due to the layout, and even that requires a much more methodical approach and shoring things up as a squad, or you just get steamrolled due to there being few places that don't have 3 or 4 entry points.
It's more twitchy than regular conquest absolutely, but not like CoD: