opening and quiting vim for a file of 2500 lines of C++ (so with all the plugins and stuff) takes 0.030seconds.
I don't see how you can be satisfied with 2 seconds startup for a terminal application
Besides this comparison looks like a total bikeshedding unless you plan on downloading torrents with vim.
By the way the project looks fantastic. I'll be giving it a try.
The alternative for just command line torrent on a *nix is aria2 [0]. Works exactly as advertised.