No way - Canon lenses and flashes are nowhere near as good as Nikon.... wait I'll stop there, that argument can go on for hours.
that is only really an issue if it prevents you from handing something to your client that you are not happy with or the the piece of equipment is overpriced compared to the competition.
any other issues are for forum fanboys with a flickr account to discuss.
FWIW the only issue i have with canon is the poor24mm tilt/shift. everything else works without any real compromise or with issues that are common to all cameras such as diffraction. i don't use the flashguns much as the light they give is poor if you want to light something properly.
that is only really an issue if it prevents you from handing something to your client that you are not happy with or the the piece of equipment is overpriced compared to the competition.
any other issues are for forum fanboys with a flickr account to discuss.
FWIW the only issue i have with canon is the poor24mm tilt/shift. everything else works without any real compromise or with issues that are common to all cameras such as diffraction. i don't use the flashguns much as the light they give is poor if you want to light something properly.