It's pretty evident that SM girl groups aren't really powerhouse performers or entertainers on stage (with the exceptions of SES) ever since SNSD. So i really don't get why people exagerate so much when talking about Red Velvet's lack of charisma. I love f(x) but it's pretty obvious that performances aren't their strong point (they had some AMAZING moments but overall they were pretty average). Same applies to SNSD. You can watch any of their performances on big stages (Gayos, MAMA, Dream Concerts, etc) and immediately notice that they don't really know how to handle a big crowd naturally, don't have good chemistry between them and rarely are in sync. So yeah, give these poor girls a break already because everyone acts like they don't pay good tribute to their seniors but, to be fair, they were far from being great performers.