It's not really fair to compare a very nice 13-15fpe spring gun to a 13-35fpe+ PCP repeater as springers are far more difficult to shoot accurately, usually less powerful and usually single shot. Even though they may shoot comparable groups at 50 yards, in trained hands, most will shoot the Marauder better. At 75 yards all of this is magnified. The Marauder is going to win in pretty much every category in any caliber.
Springers are simple machines you pick them up and shoot them there is nothing to adjust you find the right pellet for your barrel and they shoot quite well.
PCP guns are completely different animals. There are adjustments, most pellets shoot better at specific speeds, and you can adjust and fine tune the gun, for the specific pellet you are shooting, to get the best accuracy out of it. You can also turn the power up or down a considerable amount. So less power for plinking in close and max power for hunting or long range shooting.
Springers don't need any help you cock them put them up to your shoulder and pull the trigger time an time again. No extras to buy.
PCP's on the other hand need help. They need clean dry air whether it is supplied by a tank, compressor or hand pump. So you will need to invest more money in a pump, tank or compressor as well as a filter to keep moisture out of your gun or tanks.
PCPs will take you over to the dark side where the addiction is strong and will introduce you to the bottomless pit that will constantly empty the bills from your wallet and change from your pockets. Although they may leave you just enough for Taco-Bell.
Where as the springers will not get that serious with all of this and will usually leave you with enough for Steak and Lobster at the Red Lobster.