Of course, the effect of heavy weight is good. It doesn't matter how many movements you can do and how many groups there are in each movement. As long as the stimulus is in place, a group of actions can achieve the effect. Do so many groups at a time, in fact, it is several groups that play a key role.

If there is no assistant, some movements have to be changed, such as bench press. It may be dangerous. You can control the weight of RM to make the last group of the last movement exhausted (you don't have to finish the last group completely), so that you can exercise safely and fully.