And loosing a village, castle and a city in 5 days is success?
How many men did you lose compared with what you gained?
It seems to me that you believe that 'history is written by the victors' however at what cost? How many men died storming those walls, how many attacks did it take until you finally slaughtered your way in?
Once you look at the figures for both sides then we will continue to talk over whom are the real winners and losers.
The fact remains that a group of 'peasant's managed to wipe a shiny man army, you can hide this however you want but the embarrassment will always be on record, it shall be known as the new Thermopylae (however this time we won)