Something that I had believed for years without making the effort to actually look up figures for myself until now, but Weekly Shounen Jump apparently has a bigger female readership than the readership of Ciao, the biggest shoujo magazine.
And, yeah, 20.2% of 1,176,667 is over 50% higher than 143,333.
Figures from a site aimed at advertisers:
https://www.zasshi-ad.com/media/comic/boy/weeklyjump.html
https://www.zasshi-ad.com/media/comic/girl/chao.html