STP vs RSTP convergence times Am I right in thinking the following?

STP:Hello time = 2 secsMax Age = 20 secsListening = 15 secsLearning = 15 secs

= 52 secs to convergence

RSTP:3 missed BDPUs @ 2 sec each = 6 secsLearning (no listening) = 15 secs

= 21 secs to convergence

Also, are there any differences between STP blocking port, and RSTP alternate port. Or is just a naming thing?

thanks