Thanks for linking the report. I tried to find it by myself to no avail.
All in all I think that there is an informal consensus that the 340 is somewhat below expectations when it comes to take-off performances. At the same time the type is in service for many years and except for some "close calls" it has not been plagued by TO accidents, so it is probably not that bad. and now that every competent driver is aware of this I hope things should be under control.