Well I‘m talking my experience. I have every normal red 4* maxed, would I use Scarlett in defense? No. Gormek? Yes. Green Titan? Gormek is mandatory especially when you do not have wilbur. Scarlett? High tile damage is great I always use her but she dies like an ant. Raids? Both are usefull but I dont use either of them. Events? Defdown (Gormek) is more usefull than Attack debuffer (Scarlett).
Its not black/white. Both have their place. Everybody has their opinion. Better listen to different opinions and decide for yourself. But don‘t follow advices like „do not this / do not listen to that“ etc. @Nemessis