Just a note on levelling: Gary explicitly said in an early "TSR" or Dragon article that a PC should reach "Name" (9th) level after about a year of play (40-60 sessions), and gain about 2-3 levels a year beyond that.
3e/4e have a slightly faster level-gain for low levels, but not that much more.
9th level after 50 sessions means one level every ~6.25 sessions.
3E is designed for a level every ~3.33 sessions.
4E is designed for a level every ~2.5 sessions.
So, in fact, there is a significant acceleration. Of course, 4E has tempered that by making each level worth less; a 3E level is worth about two 4E levels, so if you measure by actual character power as opposed to level, 4E advancement is closer to the 2E ideal than to 3E.