What an odd thing to say. If they have Ruiz around #10 in the system which is about where I'd have him, it doesn't mean they have low hopes for Ruiz, it means they're feeling just that much better about the others. You know, the ones they had a say in drafting and signing. Of course they like the guys they scouted for months and then brought into the system and helped now develop for months and years.
Again, I think some just don't want to accept that the Brewers weren't getting anyone who would be a no brainer automatic top 3 guy at this point in the process when they were looking for a team's current successful closer in return. Getting Rogers meant a lower tier of prospects. The fact San Diego was saving it's better prospects for Soto and was willing to give up it's own closer rather than keeping him to pair with Hader in late innings, is exactly why the two teams lined up. The Brewers wanted MLB talent as part of the deal and San Diego was more than happy to oblige since it meant holding their best prospects for Soto/Bell.
The hint that Gasser and Ruiz are tier below guys is literally in the fact San Diego was willing to part with them while pursuing a rare, cheap superstar being moved at the deadline.
And quite honestly if someone wants to jump Gasser and Ruiz, who were 2nd to 3rd tier guys in the Padres system, to at or near the top of the Brewers list, then they're essentially saying they didn't think much of the Brewers prospects to begin with. Yet it sounds like people are very excited about the guys who have been in the Brewers system prior to the trade. Which tells me, especially about Ruiz, is this all boils down to with varying degree: shiny new toy, some shiny recent stats, and partially attaching an inflated value because people have long been expecting a haul for Hader.