Actually today’s Parshas va’Eiro is the worst, as it is just about the very hardest Sidroh for Ba’al Koreh to read.
Chukas-Balak is a makeup double Parsha if the 8th day of Pesach or the 2nd day of Shavuos are Shabbos – This assertion vis a vis is absolutely correct via a vis 2nd day of Shovu’os on a Shabbos.
However if the 8th day pf Pesach is on a Shabbos, in a regular year it is made up with Behar Bechoosai doubling up in the diaspora, and if 8th day of Pessach is on a Shabbos, in a leap year, it is not made up all the way thru Mattos Massei.