Boxing gloves offer little finger mobility and virtually no grip because the rules of a boxing match don’t require such features. MMA incorporates submissions, grapples, and overhand strikes that do require those features. So, MMA gloves expose the fingers while protecting the knuckles and the back of the hands.
IMPACT ON PUNCHING POWER
With more padding, the belief is that boxing gloves generally will deliver less punching power. However, there is some debate in fighting circles that the padding simply minimizes cuts and scrapes, allowing fighters to continue fighting. MMA fighting gloves deliver more power with their stiff materials and thinner padding, but regardless of the glove, true punching power comes from agility and technique.
So basically heavy ounce gloves will allow more punches over time, instead of a quick KO as is the case with MMA and a well-executed punch.
Boxers end up with brain damage and many other complications as a result.
“Punch drunk” comes to mind on many occasions…just look at the great Muhammad Ali before the onset of Parkinson disease!