FCP would have the same issues as Avid. Both of them aren't designed for this resolution. They are designed for broadcast TV work. Well, FCP 7 and earlier is.
You need to use an App that was designed to deal with this...like After Effects or even Premiere Pro. DOn't have it? Well, now you have an excuse to get it. Because you have video that you need edited, and the apps at hand aren't designed to deal with it.
great info, thanks Shane.
And BTW I am the guy you helped his career starting! You got me a job as a lead assistant editor at the Incubator in 2008!!!
This was the job which got my career started. I have been editing promos for TV networks for the last 5 years now and part thanks to you!
So thank you for still being around and help!
People... this man ROCKS!!!