Rate of climb is less in OEI flight owing to less thrust than in twin engine flight, so yes, while the airspeeds during 2nd segment climb are similar, rate of climb is less than what is typically seen during a normal profile takeoff, hence why it provides more time for thinking.

V2 and VFS are still respectively slower than V2+20/30 and 200/250 KIAS, so even there for someone adjusted to a normal profile CRJ takeoff the airspeeds do give one more thinking time.