Trainer Battles + Sinnoh Stone rates

[jhameia]

So I noticed this:

If I battle a gym leader one a day regularly, I'll get stardust that first battle.

I didn't battle a gym leader for a couple of days, and when I finally got around to it, I got a Sinnoh stone.

Curious, I battled again the next day, and the next, three days in a row, stardust three days in a row.

Gave it a rest for a day, battled, and then got another Sinnoh stone.

Anybody else see this too?


I've also battled a couple of friends, and even in battles where I win, they'll get Sinnoh stones. One friend lost twice in a row, and got two Sinnoh stones both times she lost.