Guys like me who have over 30 str and have single digit agility really struggle in movement and get outmanoeuvred by faster builds who can simple backstab you, spam you, stun you, run around and kick you to death. Being slow target means you are more susceptible to getting hit by cav and ranged. Another thing for strength builders is that they struggle to pull out of big mob fights when it gets all too much for them, once they get stuck in, they stay in and often die. So, it's harder than you think playing as strength based chracter. This is from my 2+ year experience with a STR build.
I see that you quoted me as well. You're right for battle mode but as I said:
Well, having 42/3 mauler build with 102 HP and fully loomed milanese plate would certainly grant me shitload of points in siege game mode, almost permanent x5. Sounds like serious advantage to me.
Currently siege mode gives better XP, it induces way less rage than battle (it's actually relaxing) and even loners like me can make a difference and earn good XP and gold, even against Greys and HRE. On battle that is slowly becoming harder to pull off and I'm not sure I like part of cRPG community co that regularly players battle.
Another reason why I like siege folks more is that they speak more english in chat, even though they are mostly polish/russians/germans. As of lately, on EU1 everyone started speaking their own language and I don't like that because I can't understand what they are saying.