Sorry to burst your bubble FDK, but a 210 with a 550 bolted to it drives right on past an A36. The A36 I fly trues at 173kts. The 550 210 that I've driven was 5 to 7 knots quicker than this with similar loads.
Is that an IO550 powered Bonanza you're comparing to...was it an IO550 210 with Millenium cylinders?
Milleniums have such improved airflow they typically produce 10+ more HP than an IO550 with other cylinders...which is 25+hp more than an IO520.
Both with 3 bladed props or did the Bo have a (rare these days) 2 blade?
The argument over whether 210s are generically faster than Bonanzas is just laughably silly because you'd need identical engines/props/ambient conditions/power settings etc to have any hope.
Even after all that one will be 7-10kts faster than the other...about 2 minute/100nm quicker.
Let's just accept that a 210 carries a bigger load and the Bonanza is nicer to fly
...and quicker
