Thanks for the informative reply, Breakor. Excuse my ignorance, but what is the relation between requiring anti-ice and needing to apply speed-brake? [Air temp is low, so air is more dense therefore more lift which needs to be ditched by deploying air-brake?
]
This
does help my thesis in that I can state with confidence that the winglets don't significantly affect a/c handling. Until now I've been unable to find any reports on this particular subject.
Also, your 2nd paragraph is definitely useful in demonstrating how countless different conditions and parameter mean that no one landing or flight is directly comparable to another.