[LAD] jack for windows compared to linux

What is the performance of the jackd like in its windows incarnation. Similar to Linux, better or perhaps significantly worse? Is it recommendable for general purpose usage? Since this would be for cross-platform applications, I am also interrested in any experience with the various graphics API's available. I have here a small audio application written for Win32 and compiled for Linux using winelib. This kind of works - at least for small projects like this one - but latency is way up. The same application ported to Qt with jack as a KDE application runs as smooth as one could ever request. Would this then be a simple matter of running ./configure and make on the output from KDevelop to get it to compile and run on Windows as well?