You bought a pair of 21 Watt LED bulbs? You are definitely planning to melt the bushes.
Mmm, he could just mean that they were sold as 'equivalent to 21W', i.e. claimed similar light output to a 21W conventional incandescent bulb. More likely, I'd reckon, particularly if a FleaBay seller.
+1 on the correct bulb base info, of course.
As an aside, I'm rather impressed with the light output of some of the multi-SMD LED festoon 'bulbs' now made to replace car interior lighting bulbs. The better bayonet cap ones should be good too.
