Archive and RISCWorld (strangely the name of the magazine being quoted wasn't mentioned in this article) are not rival magazines. Indeed RISCWorld was set up specifically not to be a rival to Archive. One is published monthly in printed format, the other bi-monthly on CD.
The two magazines actually co-oeprate quite closely, as an example the Archive On Line mailing list is set up for subscribers to either Archive or RISCWorld. Further to this, APDL, the publishers of RISCWorld, also manufacture the Archive CD.