@xxlyyk
Possibly. I don't think we can project too much from the original stats other than we should suggest that home users consider updating to newer versions of their operating systems (or new machines for Windows XP Home users).
If we look at market share by OS type/version:
http://marketshare.hitslink.com/operating-system-market-share.aspx?qprid=10
The numbers for Windows Vista and 7 show a 9% Infection rate for 33% distribution (good @ ~1/3 of expected infection) XP has 75% infection for 57% distribution (~1.3 times infection rate).
"OS X Other" (Presumably OS 10.6 plus all previous versions of OS X other than 10.58 and 10.11.4) has 3% for Infection for 3% distribution (corresponding infection?). OS 10.5.6 has 9% Infection for 1.5% distribution rate (6 times infection rate) - OS 10.4.11 has 4% infection for 0.4% distribution rate (10 times infection rate).
What I do find surprising is the numer of XP Professional infections. Generally, we could think that XP Professional is managed by "professionals" whilst the perception is that OS X is often managed by "users". If the Windows XP "professionals" were doing their job properly, the rate of infection should be lower.
If we believe Symantec (and I personally haven't used any of their products for the last 6 years), the original Windows versions of the Trojan.Jnanabot infection had 0-49 infections on October 26, 2010. The article says that the number of infections is now "in the thousands" (maybe 10,000?) so we are looking at maybe a few hundred Windows 7/Vista infections with a few more hundred OS X infections of which the substantial majority are on old systems.
I help run (as a volunteer) classes for retirees. We use Windows XP, Vista & 7, OS X and Linux. We get pupils to set up separate 'admin' accounts and 'user' accounts for their systems. The advice that we give is "Only use the 'user' account for normal tasks - If you get a message asking you to install something, be suspicious."
I note that the MacBook Air no longer ships with Java and that it now can be downloaded from Oracle - I, like you, try to avoid Java on client machines.
So in conclusion: Unless we know the breakdown of "OS X Other", I might suspect that Symantec are trying to whip up interest in their Apple producs to a growing Apple "Home User" market as their Windows Home market share is threatened by the free Microsoft Securty Essentials product.