Points are points. When figuring out value, you must consider:
1. Initial purchase price - silver weeks are much less than platinum
2. Annual maintenance fees - more rooms, more annual fees. Week color does not matter (silver 1bd=gold 1bd=plat 1bd, 3bd annual fees are much more than 1bd annual fees)
3. How long you intend to keep the timeshare
4. Total points - more rooms, more points. Platinum > gold > silver for the same size room
With these four numbers, you can calculate the average cost per point.
Over 10, 20 or 30 years, a platinum 1bd 4800 pts could be less costly than a gold 2bd 5000 pts. The platinum 4800 pts costs more up front but because it's a 1bd it has less annual fees than the 5000 pt gold 2bd, saving money over time.
Run some scenarios. Expect maintenace fees to go up. You could also factor in the interest paid on the purchase if you borrow funds and the final sale price if/when you dispose of the property.