They are the same, but since the fittings and pipe are larger, they take more time to heat up.
A little emory cloth helps to clean the pipe where it will be going into the fitting and some good flux.
I like using Bridgit® Nickel-Bearing Solder
A quote from their site:
Bridgit caps like no other lead-free solder, and its wide plastic range of 170°F allows the operator to fill both tight and loose, non-concentric connections with ease. The strength of a Bridgit joint far exceeds the pressure point at which copper tubing will burst.