I think when they say the force is the same, they are talking about the pressure the punch causes.
(...)
My point is that, using MMA gloves will hurt your skin more, but the distance the punch pushes your head back should be the same.
I was watching a show last night where scientist measured a punch by a professional heavy weight boxer using 12oz gloves. He measured 1300 lbs of force. They also measured Rampage Jackson's punch using 5oz MMA gloves and he measured 1900 lbs of force. But here's the part that i thought was amazing...the size of the gloves didn't matter at all. They found out that 12oz or 5oz both decreased the force by 20%. The size didn't matter at all.
Rampage Jackson went on to say that "MMA is the safest full contact sport, because he's only taken 100 of those kinds of shots to the head in his whole MMA career. But boxers have to take 100 shots in one round."
It's just not really that simple. A nail is a stationary object with a characteristic, it's sharpness. Weight distribution cancels out that sharpness. However, one thing that happens psychologically when you're wearing bigger gloves and realize it, you're willing to swing harder and often need to swing harder to get said impact. With the smaller glove if you know you risk hand damage (as any Fighter SHOULD know), you have to be more careful. Floyd Mayweather is a perfect example of this, in the Gym wearing bigger gloves, he's a beast. He's know for kicking the crap out of bigger guys on a routine basis and having to hire very reputably durable guys like Lovemore N'Dou and Carlos Baldomir to take his punches in sparring.
In the ring, he's broken his hand at least twice, one against a smaller guy and once against Baldomir himself.
That's just one other side-factor in the equation. It's not as simple as one nice neat math problem.
all of you saying that 16-12 oz gloves give a similiar punch to 5 oz....you ALL would chose to be hit by a mike tyson w/ 16 oz then 5 oz.
i have sparred with people using 12 and 16 oz gloves, 16 oz is a MUCH softer and easier hit. i can only imagine what a solid hook to the face with a 5 oz glove feels like...and for a physical explanation for this is that force is maximized when there is small surface area and less absorbtion from the foam.