the warriors just threw darts and landed unsurprisingly the player with the biggest gap between current salary vs new.
they openly stated they were "buying back the farm" and missed out on numerous priority kiwi signings before landing RTS.
luke just wanted out of the bunnies.
The Warriors went after RTS because Tomkins wanted a release. Tomkins was told that he won't be going anywhere unless they find a suitable replacement. Doyle reached out to RTS, and from there it just happened.
As you say, Luke wanted out of the Bunnie. He wasn't off contract so initially the Warriors would have had no reason to approach him.
Foran was there main target in the off season, but that was based on Luke not being off contract and the Warriors already having a hefty priced fullback on their roster.
The fact the Warriors went after Foran says they rate him as a player, but there's nothing to suggest that he was a preference over Luke/RTS, that's something that we'll simply never know.