One difference that I think is important: no .htaccess in nginx. So the only way to change any configuration in nginx is in the configuration files and a server restart is necessary.
With .htaccess files turned off (AllowOverride None), I got 282 requests per second. With .htacess files on (AllowOverride All) I got 286 requests per second (Yes, actually a few more hits per second with .htaccess turned on, but the results swing from test to test by a few percent anyway).