Of course it is. But then again, the source material was already one if not the greatest game ever. All they had to do was stick with the design and formula which they did. For every part cut, there is something new and different instead. Parts that were a slog on replays are now literally speedy roller coaster rides of awesome. Characters that were undeveloped like Luis are now fleshed out and made much more important.
RE2 remake and RE3 weren't very long games but they were great re-invisionings of the original game that upped the atmosphere, finessed the gameplay and streamlined them. RE4 Remake on the other hand is just as long and fuck balls crazy as the original game but with more better combat, far more dynamic enemies with freaking combo strings that go hand in hand with the new parry mechanic, and the Plaga parasite poses a much bigger threat than the original in all of it's forms.
Also, instead of OG RE4. babbie's first puzzle puzzles, now we have actual RE style puzzles that I know will utterly fuck up my speedruns. Also in the OG I was always packed with ammo. Now, I am fucking counting every bullet.