TITLE: Seeming contradiction about P vs NP between graphclasses.org and at least two papers about clique in even-hole-free graphs
QUESTION [7 upvotes]: I believe correctness about clique in even-hole-free graphs
of graphclasses.org
and the paper Vertex elimination orderings for hereditary graph classes, Pierre Aboulker, Pierre Charbit, Nicolas Trotignon, Kristina Vuskovic would imply $P=NP$.
Accordinth to graphclasses:  
Clique:  NP-complete by IS on complement,  
the comeplement
is related to IS on 2-subdivision
citing S. Poljak, A note on the stable sets and coloring of graphs
Comment. Math. Univ. Carolin. 15 (1974) 307-309 ZMath 0284.05105
According to the paper, p. 4:
(Improve) Maximum weighted clique in even-hole-free graphs in time $O(nm)$.
Related paper is LexBFS, structure and algorithms, Pierre Aboulker, Pierre Charbit, Maria Chudnovsky, Nicolas Trotignon, Kristina Vuskovic which claims the same.
The sources appear credible to me, though an error is
certainly possible.
Added Third paper gives $O(n^2m)$ algorithm for MWC.
On graph classes, to get an explanation about complexity
click on [+]Details.

What went wrong?

REPLY [14 votes]: On http://www.graphclasses.org, an even hole means at least 6 vertices. If you open the details of the forbidden subgraphs list of the page for even-hole-free graphs  and click on the link for even-hole, you'll see the definition.
In the articles you refer to, an even hole means at least 4 vertices. The even-hole-free of the articles is what on graphclasses.org is called  even-cycle-free.
Hence, P=NP is still open.