I'm not sure why anyone is bringing up RE4 and RE5. The reviewer writes that the design "breaks the contiguous level design that made the original Resident Evil so compelling to explore". I might be mistaken, but my expectation is that the game attempts to combine exploration with action. If the game is broken up into small sections with checkpoints at the end, then it's quite possible it detracts from the exploration and survival elements that people enjoyed in RE1. They are certainly treading a fine line, because it's also possible that the action doesn't meet the lofty standards set by RE4. I've only played the demo, so I don't know yet. As Nirolak wrote, and whether or not it's rational, many people will expect that a handheld game such as this will have the "soul" of its console predecessors. In this case there are so many predecessors it's hard to know what to expect.
On another note, it's not surprising that reviewers are inclined to go along with the hype. In this case, apparently the reviewer "has an axe to grind", "probably didn't actually finish the game", "doesn't like handheld games", or is just begging for an HD port. Don't read reviews if you don't want to hear other people's opinions.