None of those planets' orbits are precisely divisible by 11 years.
In other words, they're all in somewhat different positions in relation to the sun every 11 years. They don't fall into the same alignment at either the solar minimum, OR the solar maximum.
The spatial relationships between these four bodies is going to be different every time Jupiter swings around.
Jupiter’s year is equal to 11.86 Earth years.
Venus’s year is 224.7 days, or .616 Earth years.
This means that Jupiter and Venus line up 19 times every Jupiter year. Earth, obviously, lines up with Jupiter 11 times. It’s not that unlikely that all these orbits will line up decently often (about every 11 years), especially with two of the planets having much faster orbits. Calculating the math is more of a pain than I really feel like doing. Plus it’s been a looong time for me.
Yes, they aren’t divisible by 11 years, but that’s just an approximation. I think the actual event is 11.05 years, so that would mean the event occurs 93% of the way through Jupiter’s year, so it would be at a different angle from the sun each time. Also, if you divide 11.05 by Venus’s orbit (.6156), you get 17.9499, which means Venus is pretty close to that position for the 18th time in that time frame. Earth the 11th time, and Jupiter the .93th time.
Now, I’m not saying this has anything to do with the sun cycle (and I rather doubt it), but the math does seem to work with the time frames for them to line up. Why they pick those specific planets though, who knows.