View attachment 117967
vs.
View attachment 117969
The 5e example is not only less than half as long (BECMI grappling continues on the next page), it includes the base rules for grappling, a feat that improves grappling, and two conditions which are universal but that are used when grappling.
Or another example...
5e: New Player, you found a magic shield! It's a simple +1 shield which means you get to add an extra 1 to your Armor Class. You used to have an 18, so when you use the +1 shield your AC is 19.
BECMI: New player, you found a magic shield! It's a simple +1 shield which means that you get to subtract an extra 1 from your Armor Class. You used to have a 2, so when you use the +1 shield you have a 1.
Or another example...
5e: New player, in order to figure out what animal left that track roll a D20 to make a Nature Check. 20! Awesome, that means you did really well and know its a bear, and that its wounded.
snip time You swing at the bear with your sword, roll a D20 to hit. 20! Awesome again. Thats a critical hit and does extra damage.
BECMI: New player, in order to figure out what animal left that track roll a D20 to make a Nature Check. 20! Oh man, not good. You think its an antelope or something. You actually wanted to roll low.
snip time You swing at the bear with your sword, roll a D20 to hit. Oh man, another 20, these dice are crap. No, 20 is good! That can hit anything in the book. ???