I'd have thought the opposite. The higher the throughput of a HYIP, the more "interest" you need to find from somewhere, and so the less able you are to meet your obligations in a timely manner.

It's all very well to say that any shortfall will be made up from staking, but that fails to take into account just how long it takes to earn a 25% return on the total throughput when only part of a single deposit (and possibly the operator's 2% fee on all throughput) is staking at any given time.