IMO, it's completely misleading to measure length by p"suqim. In this case, for example, the masa`ot in Parshat Mas`ei contain 40 very short p"suqim (33:10-49) in just 34 lines. Since a column in a "standard" sefer Torah consists of 42 lines, this represents only about 80% of a single column.
A logically much more useful measure of length is number of columns (or number of lines or number of whole columns plus additional lines [between 0 and 41]) in the sefer Torah. Of course, this can be misleading, too --- for example, all of the blank space in the shira of B"shalax and Ha'azinu make these two sidrot seem longer than they actually are using this measure of length. There is also a slight distortion due to p"tuxot and s"tumot, which cause some lines to be shorter than others (i.e., more blank space). But the p"tuxot and s"tumot generally have a relatively minor effect --- so except for B"shalax and Ha'azinu, I consider this measure of length to be fairly accurate, and it's certainly much more accurate than p"suqim.
Upon request, I can supply anyone who is interested with an Excel spreadsheet that indicates for each parsha its length and its rank (from 1 to 54) using each of the two measures of length (columns/lines and p"suqim). In general, the correlation between the two sets of ranks is good --- and those cases where the two ranks are far apart are obviously parashot with exceptionally short or exceptionally long p"suqim (on average).
Matot-Mas`ei is 9 columns and 1 line.
The maftir for Shabbat Rosh Xodesh is 13 lines --- so Matot-Mas`ei on Rosh Xodesh Av is 9 columns and 14 lines.
Vayaqheil-P"qudei is 8 columns and 29 lines, which is only 14 lines (1/3 of a column) shorter than Matot-Mas`ei.
Para is 1 column and 1 line --- so Vayaqheil-P"qudei-Para is 9 columns and 30 lines.
Haxodesh is 39 lines (just short of a full column) --- so Vayaqheil-P"qudei-Haxodesh is 9 columns and 26 lines.
One last comment, which I never realized before the discussion of this current thread. Vayaqheil-P"qudei is ALWAYS accompanied by either Para or Haxodesh since they are read separately in all leap years. So Vayaqheil-P"qudei is ALWAYS a longer leining than Matot-Mas`ei even though the actual double parsha is shorter.
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