In terms of Random Battles, there is no Player Skill metric. You'll often find posts rquesting a "Skill-Based Matchmaker", which is not the direction we've chosen to go with Random Battles at this time.
Occasionally there has been a Brawl released that uses a form of Skill Measurement, but that's been fairly rare.
---
As far Radar, this does relate to the "Gameplay Balancing" in a sense. Why? Because a Tier 8 Cruiser is treated the same as another Tier 8 Cruiser. While T8 Baltimore has Radar and Tier 8 Atago does not, the Matchmaker doesn't value them differently. Because of the Strengths/Weaknesses style of balancing, Atago power comes in other areas that allows her to influence the match in other non-Radar way.
---
Starting position is randomized, though typically Mirrored (outside of some Division placement). Even in Clan Battles (though there's a central spawn location used)
---...
Read more