Flying Crane
Sr. Grandmaster
If you end up in a close clinch, grappling Over the weapon, if the tip of a stick scrapes across your belly, you may be fine. If the tip of a sword scrapes across your belly, you may be scooping your intestines off the ground. If you grab the shaft of a stick, you may be fine. If you grab the middle of the blade of a sword, you may sever the tendons of your hand and now he delivers a killing blow.But it is the same - avoid the ouchy parts as best you can. That holds for any weapon at all.
You shouldn't really engage with the weapon, you engage with the person holding it. If you can get to the person (or get away) without their weapon's ouchy parts doing their job on you then your chances increase instantly and dramatically.
If you're adamant that the weapon is the be-all and end-all then I'll have to agree to disagree with you.
If he thrusts a long staff at you and you grab for the end of it in an attempt to control the weapon, you may be fine. If he thrusts a spear at you and you grab for the end of it in an attempt to control the weapon, you are grabbing at a fast-moving blade with a sharp edge, and you just lost the use of your hand.
If he swings a stick at you with homicidal intent, you may think that you can block and absorb the blow, because it isn’t sharp. That might get your arms broken. Now he beats your skull in.
Yes, there is overlap. But there are very important differences that can be the difference in living a little longer, or not.
As to engaging the person instead of the weapon, we’ll sure. Assuming you can get past the weapon. If he is unskilled, maybe. If he is even modestly skilled, well good luck to you.