In the lead-up to their return to Belfast tonight, Oh Sees attracted many familiar (read: suitably towering) platitudes: the greatest live band on the planet; the best rock n’ roll band in existence; deliverers of the most thrilling show you’ll likely see this year. In almost any other instance, it would not only be wise but important to treat such high-flung flattery with a healthy dose of suspicion. But in this instance — and bearing in mind Motörhead are sadly no longer in rerum natura — the tall talk flirts with cold, hard, incontrovertible truth. Having supported them at the Black Box…