If the Guam national team were to join the PBA as a guest squad, I believe they would be a formidable contender. Their height gives them a significant advantage, and in my view, they are stronger than SMB, TNT, and Ginebra without an import. It would be a mistake to underestimate them. Their recent loss to Gilas was simply because Gilas had a complete roster and a size advantage that Guam could not match.
The first game was played in Guam but it can be mistaken to be in the PH since most of the crowd in the arena were cheering for Gilas.
Well said kabayan, if ever that they'll enter as a guest team or if PBA will invite them I can agree that they'll bring good competition since similar to your observation, they've got the height and with how they are playing the game competing against our locals they got decent edge, and same with what I said before Gilas have a huge advantage as the group was formed combining young talents and then our naturalize JBL who carrying the load most of the time.