Super Vijal, it's the concept that
you should be prepared to win that matters. There's all this talk about how fights happen closer than you think and you are suggesting that perhaps instead of carrying a knife or gun it would be better to find an appropriate improvised weapon to match the attack, pick it up, and only use it as aggressively as your attacker, no more. Sure this sounds great in court, but it'll be your family and a few local police telling the jury exactly what happened while you are in critical condition in the hospital or in the mourge. It's just not practical.
If my attackers are going to come in high number and well armed, perhaps I should do the same to increase my survivability
. You may have missed the 'force multiplier' thing, one of the great things about weapons is they can increase the chance of your survivability even in desperate situations.
Your mission is to protect your friends and family and live another day, it's constan and you never know when you might need to execute it. So in the mean time, it might be a good idea to arm yourself with a weapon and learn how to use it.