[Tokinwhiteguy]

One huge advantage of the EJ20 is low compression, something the 25 doesn't have. Lower compression allows you to run more boost. Also, the Ej25 has a very aggressive timing curve, so you have to pull timing to run boost safely, which can raise your EGT's. The wrx swap also includes the ecu to go with the engine whereas a turbo kit you have to either get a standalone or a piggy back, a wideband, get tuning etc. The ej20 will run smoother and be more reliable for a daily driver. Also, there are a lot more parts available for the wrx, which makes upgrading really easy. I seem pro wrx but I actually built a turbo kit and love it, but if I had the money I would have gotten a swap.
They aren't quite the "same" price if you can find the parts yourself. A wrx swap will be 4-5k but a turbo kit setup only cost me about $1400, so it all depends. Hope this helped.