DVD+R vs DVD-R

I took for granted that the only difference between +R and –R was just two different company’s technology and they are just the same. But never read about it to find out the truth. But I was wrong; I’ve googled for a while and found this nice wikipedia that has the following

A DVD+R is a writable optical disc with 4.7 GB (4.38 GiB) of storage
capacity (actually 2295104 sectors of 2048 bytes each). The format was developed
by a coalition of corporations, known as the DVD+RW Alliance, in mid 2002. Since
the DVD+R format is a competing format to the DVD-R format, which is developed
by the DVD Forum, it has not been approved by the DVD Forum, which claims that
the DVD+R format is not an official DVD format.
In October of 2003, it was
demonstrated that double layer technology could be used with a DVD+R disc to
nearly double the capacity to 8.5 GB per disc. Manufacturers have incorporated
this technology into commercial devices since mid-2004 (see DVD+R DL).
Unlike
The DVD+R format is divergent from the DVD-R format. Hybrid
drives that can handle both, often labeled "DVD±RW", are very popular since
there is not yet a single standard for recordable DVDs. There are a number of
significant technical differences between the dash and plus formats, although
most consumers would not notice the difference. One example is the ADIP system
of tracking and speed control being less susceptible to interference and error
than the LPP system used by DVD-R, which makes the ADIP system more accurate at
higher speeds. Also DVD+R(W) has a more robust error management system than
DVD-R(W), allowing for more accurate burning to media independent of the quality
of the media. Additional session linking methods are quite a bit more accurate
with DVD+R(W) versus DVD-R(W), resulting in fewer coasters (damaged or unusable
discs) due to buffer under-run and multi-session disks with fewer PI/PO
errors.
Like other plus media, it is possible to use bitsetting to increase
the compatibility of DVD+R media.
As of 2006, the market for recordable DVD
technology shows little sign of settling down in favor of either the plus or
dash formats, which is mostly the result of the increasing numbers of
dual-format devices that can record to both formats; it has become very
difficult to find new devices that can only record to one of the formats.