With the 300/2.8 AFS, all 3 tripods at 49" plus the GT3541LS at 43.75".

At 49" the GT3541LS and TVC-33 are about equal, with the alloy G1410 well behind. Contrast this to the performance of all 3 tripods at 43",. where the G1410 clearly won (see other image in this gallery).