Yeah.... the difference is quite noticeable. The Xiao Yiao Elders are suppose to be considerably stronger than the DGSD 4 Elite. Based on your system, the Xiao Yiao Elders belong like in level 95.
And XF admitted to himself that if DY can properly execute the 6MSJ, XF wouldn't be able to handle it. So DY should also get moved up to like 95, but under the condition that DY can fully use 6MSJ. As for XZ, he could beat JMZ without trouble if it weren't for his horrible battle skills and inexperience. Even in Xiao Wu Xiaong Gong, XZ's level is higher. So XZ should also be in Level 90 or 95.
And LHC, RWX, YBQ aren't better than Fangzhang. So I would put LHC, RWX, YBQ all down 5 level or 10 level.