Also, I do not know where a sentence that includes rav moshe and rabbi Jonathan sacks begins, but it is not in a rational mind.
Rav moshe never praised the rebbe any more than he praised anyone who he wrote to who had a rabbinic post. Rav belsky zt”l one time told me that he did so in order that his psakim should be niskabel in all parts of klal yisroel.