Instead, he had to make due with a slightly less extreme set of threats, most of which were designed to be especially good at beating whatever the opponents best threat was (given the nature of Hypergenesis letting them play their best threat for free)
While things have gotten a little bit better in recent years, its still pretty slow-going
Its also worth mentioning that these are estimates based on best information
There are even different versions depending on how much you want to be able to do
However, not only is Flood of Tears cheaper to cast, it comes with a big advantage: after bouncing everything, you can put a permanent card from your hand onto the battlefield
For example, if you put Spellbook (an artifact that says you have no maximum hand size) onto the battlefield and then put Doctor Octopus, Master Planner onto the battlefield, your maximum hand size will be eight