Let me get this straight. You are a:
Consultant IT guy who sometimes codes in PERL, PHP, C, C++, BASIC, FORTRAN, COBOL
who now, after twenty years experience,
wants to give up using all these languages
and become a PHP specialist because of
a single PHP test result?
Go for it! :)
Seriously, I wouldn't let the test result influence your decision.
For me, such a choice would depend on economic factors,
and on how much I enjoyed PHP compared to the other languages.
A few years back, I was astonished to find myself
leading a PHP code golf competition
despite being a complete PHP beginner!
Rather than draw the conclusion that I was a "PHP natural"
and should therefore
"forsake Perl for where my abilities seem to lie",
I concluded that the average PHP golfer was of a much lower
standard than the average Perl, Python and Ruby golfer.
Like LanX, I am not in awe of the
technical abilities of the average PHP programmer. :)