Amoresy Helion Bodybuilder Singlet Sizing

Hi everyone, I’m thinking about ordering the Helion Bodybuilder Singlet (Pure Version) and I’m unsure about the sizing. For reference: * Height: 176 cm (5’9”) * Weight: 76 kg (168 lbs) * I currently wear an XL in the Amoresy Athena suit and it fits me well. Has anyone here tried both the Athena suit and the Helion singlet? Should I size down to L for a tighter fit?