“38. There are three important principles which it is worth emphasising. The first is that, in answering that question, the court is required to carry out a comparative exercise. The court must consider and compare the position that creditors will be in if the schemes do not become effective and the position they will be in if they do become effective. For that purpose the proper comparator, akin to the relevant alternative in the context of a part 26A restructuring plan, must be identified. 39. The second is that the court must ask whether there is any difference between the creditors' strict legal rights and, if there is, to consider whether, objectively speaking, there would be more to unite than divide those creditors in the proposed class, ignoring for these purposes any personal or extraneous motivation operating in the case of any particular creditor. 40. The third is that material differences in the rights of creditors do not necessarily fracture the class. A proliferation of classes should be avoided if possible and the court should be careful to ensure that the test is not applied in such a manner that it becomes an instrument of oppression by a minority.”