You have to bear in mind these things don't quite compare volume to volume... they're different synthetic chemicals that bind to receptors in the body in different ways. Tren has a strength rating of 500 on the androgenic and anabolic chart, which sets Test at 100... You can't quintuple the dose of one to equate the effects of another. Each compound has it's own series of attributes and strengths.
There's also a question of those receptors we're targeting. There are only so many of them and if you flood them too long with too much gear, they down regulate. So pumping insane quantities of gear is only expensive.
Tren is at the top end of AAS power. I'd recommend getting a very strong knowledge of the different compounds and what they do before seriously investigating Tren.