1 - Correct. Units in a transport count as being off the board, so don't count for anything.
2 - It depends on what the "standard" actually was. If its a single model without ObSec, then the objective is contested and neither side scores it, because you both have a single model in range of the Objective (yes, the unit onboard the transport don't count). If what they moved wa sa unit of two or more without ObSec, then they outnumber the Venom and claim the Objective. And if it was a single model or more WITH Obsec, then they claim the Objective.