I totally agree, higher volts = lower amps through the driver channels in the inverter.
I guess different manufactures have different ideas on what is to much through the mosfets and what not. I accidentally started a 12v 2800w LF magna-sine with 4 freezers a fridge and everything else in the house plugged it. It started but boy was it groaning for a few seconds. If it had been a 3000w Victron, the protection would of kicked in and said no thank you. But apparently, magnum is fine with a short circuit start up. I'm sure a couple times is OK, but do it often enough, something is going to die. LF is the best way to go if you want to do start loads often. I dont think I would ever buy another HF inverter. I don't think the low cost is worth it.