The Raid was straight up good and Dredd's plot architecture definitely reminds everyone of The Raid, if they'd seen it.
The Raid 2 is damn good, watched it 2 weeks ago when it came out in theaters. It ain't for the skirmish. The Raid 2 is longer, has more of a plot in comparison and the fight scenes are just as impressive as the first movie, however the first one is grittier and I'd say still a bit better if you consider the choice of weapons used.