The problem with these ratings and categories is that they are not well designed and the criteria in some cases doesn't make any sense. For example in case of Wasabi the second term in the privacy section (not disclose information to peers) is not even applicable to a client-server relationship that Wasabi has, it belongs to full node implementations where there is peer-to-peer relationship.
And they just give it "acceptable" rating because of things like that (+rotating address and using TOR)!
That is not enough to determine whether a light wallet is good for privacy or not.