Be careful going by reviews alone. What are the reviewers using it for? Probably 80% of laptop consumers are surfing the web, sending email, maybe playing a flash game or two, writing a Word doc, and streaming the occasional low-definition movie. For that a Celeron would be fine and thus it wouldn't impact reviews much. Also, most reviews are written right after buying a product, when the "consumer high" is going strong. People want to like what they just bought. Over time, however, the "new" will wear off and they'll start to notice things they don't like. But they seldom come back and edit the review they wrote a year ago.
If you plan to get serious about poker, and intend to multi-table, you'll eventually want HEM/PT3 and a HUD. Now you're running a local, full-blown database server, and HUD overlays over all your tables. These are resource hogs. And if you have more than a few tables on a laptop screen, you'll wind up wanting to run some table management utility like TableNinja or AHK scripts, which also tend to be CPU intensive. Not to mention the non-poker related stuff you will no doubt try to do, like watch some hi-def movies or play a video game or whatever. And on top of that you'll try to multi-task and do a couple of resource-intensive things at once. On a Celeron, forget it.
Hamm and I both work in the IT field. I've been building and programming computers for well over 20 years. We're giving you some strong advice on what to look for and what to avoid, based on what you've told us you want to do. In the end it's your money (presumably) and your choice, but you can't say we didn't warn you. I would encourage you to hold out for a couple hundred more bucks and get something you'll still be happy with in a year or two. Black Friday is just around the corner and there are always some killer laptop deals to be found.