Add on top of that the feat that gives +2 to flurry for no cost other than the feat, and the monk does rogue level striker bonus with no restrictions.
Note, of course, that other strikers get their own damage boost feats. Note they also can invest in weapons with higher base damage dice, which will in general add a bit more damage in the long run than superior implements might.
Rangers and Rogues also tend to get attacks as minor actions or immediate, rangers get multiple attacks all the time. They also get weapon attacks potentially vs Non-AC Defenses, for good accuracy. Sorcerers get lots of multi-target attacks with a damage bonus on everyone they hit. Warlocks still tend to be slightly lower damage, but these days not nearly by as much - and they also get more defensive tricks and gimmicks. Barbarians can use really big weapons, get damage bonuses in their powers, and can gear up for charging and other tricks. Avengers are just really accurate.
Everyone has something going for them. Some are certainly higher up the tree than others, but all of them have something to offer, and I don't think Monk gets anything that outclasses the others. They feel pretty distinctly middle of the pack to me.
The two of the at wills do d10 damage, not possible with a rogue, and all of them get kickers including one being a close burst and another knocking prone.
Rogues can get d8 damage, though. Or d4 with really good accuracy - plus 2d8 in Sneak Attack. Plus Strength bonus if a Brutal Scoundrel. They don't get to knock you prone or attack multiple targets, but they do get some nice options - including Piercing Strike, letting them attack Reflex for, again, really good accuracy.
The L1 encounters do all d8 or better, all have kickers, one of which is a fly speed.
1d8, 2d8, 2d10. Not bad, but not really anything to brag about.
The L1 dailies are all multiple dice multiple target attacks. One of which could hit 15 targets with a 3d8 attack, another of which is close burst 2, another of which could get you to slide 1 15 targets and then has a 3 target 2d10 attack that slows(save ends).
Spinning Leopard Manuever is pretty cool. But again - 3d8 isn't game-ending damage.
For those concerned these multi-target effects will obselete the wizard... I wouldn't be. The wizard will get bigger areas that hit more targets more often. The Monk might have a few tricks like Spinning Leopard to dart across the board with more potential targets - but also without any special effects. The Wizard can hit several enemies and do very nasty things to them at the same time, and that is what their role is all about.
The Monk is a good striker with some elements of a controller. But it isn't rendering anyone obselete. The damage on its powers are ok but not exceptional, and they get many features focused on mobility rather than outright offense or defense. Which helps them have a unique role, but similarly, many other classes remain the best at their own specific niches as well.