renderer performance mxml vs actionscript

[Federico De Maddalena]

Hi,
I read in some internet web pages, and someone in this group told me,
that an item renderer wrote in mxml has worse performance than the same
renderer wrote in pure actionscript. ok i believe and i trust this, but
are there studies or analysis that demonstate this thesis? particularly,
it would be interesting to see a comparison with the results on the
performance. I don't know if someone has already done this study!
Bye
Federico