Agreed, I like them both too but with Power Pros it really does feel like I'm missing out on the guts of the game with so much of its charm tied up in to the rpg elements.
So for a pennant race where I can get by with kana and knowing the baseball-centric kanji, I'd invariably pick PYS to play as the pitching and batting mechanics are deeper even though they share very similar foundations.
If Konami localised a PS4 Power Pro into English I'd be delighted but very surprised. A lot of the Japanese for the more complex game mode elements is tied up in the actual graphics rather than simply grabbing it from a text file and rendering it like EA do with their sports titles.