Everwhere will be fighting for rental in the next couple of yrs or so when most projects TOP in ocr/rcr. In fact for D2 area, almost 1 in 2units are rental [comparing 1yr rental contracts vs existing stocks] so in terms of competition you are right in some extent as owner occupied units are not as predominant as in the mass markets sector.
Skysuites MM has the unique advantage of being at 3xx sqft, it can afford to fight at competitive advantage of <3k per month in CBD as the size are smallest in D1/D2 currently. Even EON @ Shenton is a 2bedder MM so for rental, it will likely be in the 4k, next robinson suites MM small size but it's FH status at 2.8/3k psf, rental gonna be sky high anyway.
Anyway, this project not worth looking at now since all the 690-7XXk units are gone and left over are 1mil MM units on super high flrs and 2rms around ~1.4mil