Yes, a pound of feathers and a pound of lead weigh EXACTLY the same. The "leaf" hops can be put into a convienent hop bag and pulled out at the end of the boil, while the pellet hops are typically thrown into the brew kettle and make, in my experience, a little more junk that catches in the filter when pouring into my primary. There's more techincal info concerning Alpha Acid utilization, how much wort each soaks up, how well they store, etc. - it just depends on how deep you want to go into the rabbit hole. You can also scroll to the bottom of this page and read a bunch of other threads on the same issue for further information.