Universities and the Global League Table on Sustainability

I will admit to having a marked lack of enthusiasm for academic league tables on anything. League tables seem to me to generally grossly oversimplify things. The criteria used to obtain a rank, don't always strike me as wholly pertinent and/or objective. I very much favour sustainablity but I have considerable doubts even about this league table (https://www.theguardian.com/education/2022/oct/26/universities-us-canada-uk-sustainability-league-edinburgh-rank-emissions-targets). For example, should sustainability research/ teaching carried out at a University, be the entire index of its track record? What about research/ teaching, perhaps carried out in other departments, that delivers the opposite? This 'calculation' for the league table seems to be based on the pros, without considering the cons. I'm also a committed supporter of gender diversity (in both staff and students) but I don't see that this necessarily reflects an institution's sustainability rank. Also having grand policies on climate mitigation and governance, don't always accurately reflect actions. One must accept that universities are very different (in terms of their location, their size, what they do and how long they have existed). It may be far easier for some institutions to make their buildings/campuses more energy efficient. Some universities may find it easier to 'commit to' divesting in their fossil fuel holdings (if they have any in the first place). A very simple point occurs to me. Universities, with prestigious sustainability research, are likely to receive many invitations to attend foreign meetings. Should the 'greenhouse gas' emissions of their flights, be seen as a counterbalance to their positive impact? Should Universities, with lots of foreign students, be downgraded in the league table? Their travelling generates high 'greenhouse gas' emissions but they could go on to do important work in their countries of origin. Seems like a can of worms to me.