6902 refers to the size, inner diameter, outer diameter and width. Any bearing with that designation would fit. The 2RS part refers to the type of seals, which is a less critical feature.
For my inline skates, nothing has ever come close to the original SKF bearings. But for bikes I can't really say that I've noticed any other difference apart from "worn", "run in" and "new".
A puller can be handy, but I've usually simply tapped out the bearing from the other side.
Bolt and washer is a so-so technique. Bolt-and-washer will have you pressing sideways on the inner race (to some degree), and these bearings don't really like that kind of load.
Ideally, when installing a bearing (w/o the axle being present), you should seat a bearing by pushing on the outer race only.
Now, a bearing can take a bit of sideways load, so unless it's a really tight fit in the hub, bolt-and-washer may still work out OK.
My favourite improvised bearing press tools are the sockets out of a socket wrench set. There's just about always one in there that'll mate up nicely with the outer race.