Umm perhaps you didn't look at the actual product...
1) Transformer Loss -
Any LED Driver will also have loss...any electronics will have loss, period.
2) Heatsinking - it is in an alluminumn extrusion and very well heatsinked.
3) Focusability - There is no loss of focusability
4) Lumens - I...
well, from what I see here, LEDs are going to replace fluorescents fairly quickly.... a "drop-in" LED fluorescent tube replacement that works with all ballasts? Amazing.
www.everledTR.com