I chose a strategy that brings success in 95 percent of offline tournaments!

It's simple - if you replace the anti-magic garrison with a regular one, I would have completed the map much faster with my strategy than you did with yours.

After the 6th Hero day (1-1-6), with a day and a half left until the end of the tournament, I still completed the map quite quickly.

I think all the really good offline players understand that on a map, what should be more important, i.e., which strategy - more heroes and subtle maneuvers, or simply gathering resources, or rather, spending everything on building them first.